
widthContent()
   width 1240px
   height 100%
   margin 0 auto

widthHeightBFB()
   width 100%
   height 100%


widthHeight(width = 0, height = 0)
   if width != 0 and height == 0
      width width
   else if height != 0 and width == 0
      height height
   else
      height height
      width width



boxSzing(box = border-box)
   -webkit-box-sizing box
   -moz-box-sizing box
   -ms-box-sizing box
   box-sizing box


marginAuto(leftRight = 0, auto = 'auto')
   margin leftRight auto

position(property = relative)
   if property == relative
      position property
   else if property == absolute
      position property
   else
      position property



textLine(cen=center,line=0)
   if cen && line == 0
      text-align cen
   else if line != 0 && !center
      line-height line
   else
      text-align cen
      line-height line
